Hwang, BH Hwang, KY Choi, ES Choi, DK Jung, JY 2024-01-21T13:40:51Z 2024-01-21T13:40:51Z 2021-09-05 2000-08 0141-5492 https://pubs.kist.re.kr/handle/201004/141213 When the alkalinity/NH4+ ratio increased from 4.1 to 9.4, the ammonium removal rate increased from 45 to 90 mg NOx-N l(-1) h(-1). An increase in alkalinity/NH4+ ratio was a major reason for higher pH and free ammonia (FA) concentration in the reactor. The high concentration of FA showed a selective inhibition for Nitrobacter, which caused enhanced nitrite build-up in a biofilm reactor. English KLUWER ACADEMIC PUBL NITROGEN REMOVAL NITRIFICATION AMMONIA Enhanced nitrite build-up in proportion to increasing alklinity/NH4+ ratio of influent in biofilm reactor Article 10.1023/A:1005645317410 1 BIOTECHNOLOGY LETTERS, v.22, no.16, pp.1287 - 1290 BIOTECHNOLOGY LETTERS 22 16 1287 1290 scie scopus 000089133900005 2-s2.0-0033832389 Biotechnology & Applied Microbiology Biotechnology & Applied Microbiology Article NITROGEN REMOVAL NITRIFICATION AMMONIA alkalinity biofilm biofilter nitrification nitrite build-up